C4 Tech/Performance - Page 9 - CorvetteForum - Chevrolet Corvette Forum Discussion

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1984 Carb Swap (NEED HELP)

JeremiahOch84X-Fire on Feb 9, 2026

Feb 13, 2026 08:00 AM
by 82-T/A

6

929

Wheels

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1 2)

MikieG1971 on Jan 4, 2018

Feb 13, 2026 07:48 AM
by Asterios Anagnostou

23

5,317

1993 tuning pulse per mile / why is this here if theres a speedo driven gear

dizwiz24 on Feb 12, 2026

Feb 13, 2026 02:52 AM
by tequilaboy

3

420

94 AC HVAC problem

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1 2 3)

Opihi59 on Jun 12, 2015

Feb 12, 2026 08:46 AM
by jeanpreston

45

18,172

1985 C4 wire issues

Nolandoan on Feb 12, 2026

Feb 12, 2026 06:12 AM
by Nolandoan

2

229

1987 C4 issue

M.B.H. on Feb 6, 2026

Feb 11, 2026 02:10 PM
by M.B.H.

5

730

First-hand feedback: LT1 Auto with G44 (3.07) vs. 2.59 on Launch

4CEE on Feb 5, 2026

Feb 11, 2026 11:39 AM
by radar502

12

922

What else causes a vibration at 75+?

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1 2 3 ... Last Page)

wolf_walker on Jan 22, 2026

Feb 11, 2026 09:40 AM
by wolf_walker

70

2,437

1985 C4, wire questions.

Nolandoan on Feb 10, 2026

Feb 11, 2026 04:25 AM
by veiloctane

3

610

C4 ecm upgrade for more power

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1 2)

c4vette383 on Mar 19, 2017

Feb 10, 2026 05:11 PM
by XLR8-R

22

18,408

Tuned performance introduction

Tunedperformancedotorg on Jan 26, 2026

Feb 10, 2026 02:05 PM
by Tunedperformancedotorg

9

1,057

Oil Leak

Ultra.C4 on Feb 7, 2026

Feb 10, 2026 11:27 AM
by FostersPerformance

5

374

1988 intermittent blower motor function

Stained_Class on Feb 9, 2026

Feb 10, 2026 08:35 AM
by AGENT 86

2

180

Convertible Top NCRS

c3c7vette@proton.me on Feb 9, 2026

Feb 9, 2026 11:31 PM
by c3c7vette@proton.me

0

202

1985 C4 L98 700R4 Performance Recommendations

Jakey1985 on Feb 9, 2026

Feb 9, 2026 08:30 PM
by Jakey1985

0

238

Improved camshaft for STOCK 1984 Corvette / CFI?

82-T/A on Feb 6, 2026

Feb 9, 2026 03:17 PM
by 82-T/A

16

548

JBA red spark plug wires

Steve Swan on Jan 31, 2026

Feb 9, 2026 01:53 PM
by powerplaytwo

12

943

What Grease for Poly Bushings?

81c3 on Jun 8, 2018

Feb 9, 2026 01:28 PM
by AZSP33D

13

2,084

I would like to ask for a recommendation regarding a driveshaft. C4

JACK_LEE on Feb 4, 2026

Feb 9, 2026 11:55 AM
by rremesal

4

768

Help finding a vortech discharge tube for 2nd 1993 c4 i am building

dizwiz24 on Jan 31, 2025

Feb 9, 2026 10:20 AM
by dizwiz24

1

336

Parking Brake Handle Upgrade/Simpler Replacement?

JasonC4 on Jan 31, 2026

Feb 8, 2026 06:30 PM
by s carter

5

470

H31-38 H51 VATS lockout

Soundwave on Feb 7, 2026

Feb 8, 2026 12:37 PM
by Soundwave

2

172

1992 C4 Corvette - alarm randomly triggers, interior lights stay on, DIC buttons show

Buca007 on Feb 8, 2026

Feb 8, 2026 12:03 PM
by IHBD

2

228

95 Corvette headers for cat back exhaust

Tompowers85 on Feb 4, 2026

Feb 8, 2026 11:35 AM
by ACMX92

3

348

Oil Pressure Concern 91 L98

ArcticL98 on Jan 11, 2026

Feb 7, 2026 10:59 PM
by CSN450

12

597

Great C4 Vid

James93LT1 on Jan 31, 2026

Feb 7, 2026 10:48 PM
by CSN450

6

657

1992 C4 Base model 12V no power

SpaceGrond on Feb 7, 2026

Feb 7, 2026 09:05 PM
by SpaceGrond

0

155

Mod list Recommendations

Birb on Feb 6, 2026

Feb 6, 2026 06:24 PM
by Birb

0

231

90 L98 - Can't get ALDL Scanner to work

cptcrusty1 on Oct 26, 2024

Feb 6, 2026 03:55 PM
by tequilaboy

6

641

Need '95 Track Tire/Wheel and Brake Recommendations

MarkGM on Jan 12, 2026

Feb 6, 2026 06:17 AM
by Carbotech Adam

10

697

L98 Sensor Reading and Tuning

Birb on Feb 5, 2026

Feb 5, 2026 02:40 PM
by ULTM8Z

7

342

L98 Motor Mounts: Poly On The Left Only ?

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1 2)

solar88 on Dec 21, 2025

Feb 4, 2026 06:37 PM
by 93TALT4A4

26

950

Fitech 38350 tpi Installed

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1 2 3)

D Dubya on Aug 24, 2023

Feb 4, 2026 05:20 PM
by judy marie

47

15,286

Vacuum line issues

Nathandrott on Feb 2, 2026

Feb 4, 2026 01:14 PM
by 2011KLR

3

741

Sticky Throttle

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1 2)

Tompowers85 on May 17, 2025

Feb 4, 2026 10:48 AM
by Tompowers85

20

1,312

Chasing a specific sound profile from exhaust

ramahon on Feb 1, 2026

Feb 4, 2026 10:39 AM
by ULTM8Z

4

821

Best Shorty Headers

CrossfireInfection on Jan 20, 2026

Feb 4, 2026 12:50 AM
by mike1111

8

1,080

Street driving a ‘square’ setup with 315’s all around

dizwiz24 on Feb 2, 2026

Feb 3, 2026 10:31 PM
by dizwiz24

5

934

96 LT1 started leaking oil like absolute hell. Where to look?

Cloud_Jumper on Jan 6, 2026

Feb 3, 2026 07:22 PM
by Cloud_Jumper

14

762

What years did the C4 convertibles have a hard top?

cardo0 on Aug 6, 2016

Feb 2, 2026 11:49 PM
by Vetteman Jack

12

20,847

ACDelco PF454 - What Gives??

conniekalitta on Feb 1, 2026

Feb 2, 2026 07:17 PM
by RWDsmoke

2

1,075

1994 C4 park brake broken

KenAdams on Feb 1, 2026

Feb 2, 2026 04:20 PM
by KenAdams

4

695

C4 , shoddy rear suspension for racing, should have been class action lawsuit

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1 2 3)

dizwiz24 on Sep 7, 2025

Feb 2, 2026 09:42 AM
by lancenichols

44

2,726

Searchin: 3.07 gear set for Dana 44 85 Vette

Schieby on Jan 29, 2026

Feb 2, 2026 01:02 AM
by WVZR-1

10

856

88 LED Cluster replacement bulbs vs Halogens

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1 2 3 ... Last Page)

Da Mail Man on Dec 3, 2025

Feb 1, 2026 12:21 PM
by ramahon

69

2,300

Moved

Why over half the population votes the way they do...

ULTM8Z on Feb 1, 2026

-

Late C4 LCA with Early C4 Upright

AZSP33D on Jan 17, 2026

Feb 1, 2026 11:30 AM
by AZSP33D

18

1,385

Aftermarket 700R4 knob

Yariv on Feb 1, 2026

Feb 1, 2026 11:24 AM
by Yariv

3

357

L98 Rebuild Questions

Motoguy777 on Jan 28, 2026

Feb 1, 2026 09:33 AM
by FostersPerformance

6

602

1986 l98 high oil presure

iatserules on Jan 27, 2026

Feb 1, 2026 12:29 AM
by Nexxussian

5

582

1987 Bose Radio Removal - Stubborn Radio

DelayedEnd on Jan 24, 2026

Jan 31, 2026 10:49 PM
by s carter

5

505

87 Bose Radio AUX Mod - Wire Identification

DelayedEnd on Jan 29, 2026

Jan 31, 2026 06:31 PM
by DelayedEnd

1

271

84, 84corvette, 86, bypass, change, corvette, fuel, fuse, mesltef, pliv, pump, relay, test, vett, vette

how do I test relay/ where is fuel pump relay? '86

rithsleeper on May 15, 2009

Jan 31, 2026 02:51 PM
by Zeusnut4

8

5,057

1982, 1986, 87, 90, c4, c5, corvette, fuel, fuelpump, fuse, hushkick, locatio, location, panel, pump

Fuel Pump Fuse Location

SmokinBlack on Mar 6, 2006

Jan 31, 2026 02:35 PM
by Zeusnut4

14

43,360

Quick Smog/Air pump question

adamw412 on Jan 30, 2026

Jan 31, 2026 12:21 PM
by SirReal63

6

847

Speedometer Gear Question: 2.59 to 3.33

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1 2)

SmokinBlack on Dec 1, 2024

Jan 30, 2026 10:17 PM
by IHBD

31

1,254

Non-stock '84 air filter setups?

69427 on Jan 23, 2026

Jan 30, 2026 07:31 PM
by ex-x-fire

2

405

Denso starter tear down (a few pics)

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1 2)

1985 Corvette on Nov 28, 2014

Jan 30, 2026 06:57 PM
by 1985 Corvette

36

5,510

Tuner in Florida

94BlueLT1Auto on Jan 29, 2026

Jan 30, 2026 05:15 PM
by AAFC

1

292

1996 Optispark vacuum line routing

LaRaikaa on Jan 28, 2026

Jan 30, 2026 04:58 PM
by s carter

4

357

1985 C4 hesitates under throttle runs rich

Nolandoan on Jan 29, 2026

Jan 30, 2026 02:24 PM
by Nolandoan

8

382

Forced Air induction help

TC95 on Jan 27, 2026

Jan 29, 2026 06:52 PM
by XLR8-R

3

450

Valve spring recomendation for .500 lift

nitrusmr2 on Jan 29, 2026

Jan 29, 2026 12:59 PM
by nitrusmr2

0

312

MYSTERY L98 (use ostrich II vs other PCM /. ECU) ?

timgman on Jan 27, 2026

Jan 28, 2026 10:48 PM
by Tunedperformancedotorg

3

404

94 HVAC A/C failure - Programmer - REPAIRED

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1 2)

pcolt94 on Jan 26, 2014

Jan 28, 2026 08:18 AM
by jeanpreston

36

23,913

Need Help Finding A Good Vette Mechanic Near Cleveland Ohio

Vette@6 on Nov 4, 2022

Jan 28, 2026 06:22 AM
by blackozvet

8

3,494

Tuneable ECM

CrossfireInfection on Jan 23, 2026

Jan 27, 2026 09:48 PM
by Tunedperformancedotorg

9

577

1994, 84, behiind, body, corvette, didtributor, distributor, forum, leak, leaking, leaks, mechanical, oil, opti, optispark, shaft

oil leak behind distributor

steve bavaro on Nov 20, 2001

Jan 27, 2026 08:43 PM
by 81c3

7

3,263

Looking for a tune for your L98 or early LT1?

SDTull on Aug 2, 2025

Jan 26, 2026 04:19 PM
by Tunedperformancedotorg

12

1,046

5.3 lm7 swap into c4 advice?

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1 2)

AUS10C4 on Jan 10, 2022

Jan 26, 2026 04:03 PM
by 93YellowVette

22

12,427